40mm dynamic unit, with strong bass explosion, clear and realistic sound quality and deep bass, presenting you with a different listening experience Using Bluetooth 5.0 chip, the connection distance can reach 10~20 meters, and the transmission is faster, the power consumption is lower, and the connection is more stable It is not only a wireless headset, but also can be connected to a device with a 3.5mm jack and used as a wired headset Support card playback, no need to connect to the phone, plug and play The invisible steel bar runs through the head beam design of the whole machine, which can be adjusted in multiple steps according to the head shape, and the expansion and contraction are natural Long press "+" and "one" at the same time for 2 seconds to switch radio, bluetooth, and TF card modes in turn Product model: VJ320 Switch mode: bluetooth/radio/TF card Transmission radius: Barrier-free 10M Bluetooth version: 5.0 Standby time: about 200 hours Play time: 12 hours Product Weight: 207g TF card compatible: support Bluetooth call: support Call Answering: Support Extended function: The audio cable provided can be connected to a computer and various audio equipment. Product color: black, red Applicable products: Apple, Samsung, Huawei, Xiaomi, OPPO, Meizu and other mobile phones with Bluetooth function, IPAD and other notebook computers and desktop computers with Bluetooth function. Reminder: When the headset is connected to the computer, in order to protect your hearing, please turn the computer volume to mute first, and then gradually increase the computer volume according to your own hearing condition.